Renesas QB-RL78L1C-ZZZ

Overview

QB-RL78L1C-ZZZ from Renesas Electronics is an in-circuit emulator (ICE) designed exclusively for debugging RL78/L1C microcontroller-based systems. It supports real-time execution, non-real-time stepping, memory/register manipulation, and trace capture with 128K frames of trace buffer. It interfaces via USB 1.1/2.0 to Windows PCs and supplies target power at 1.6–5.5 V for direct connection to RL78/L1C evaluation or production hardware.

For engineers reviewing the QB-RL78L1C-ZZZ datasheet, QB-RL78L1C-ZZZ pinout, QB-RL78L1C-ZZZ application, or QB-RL78L1C-ZZZ equivalent, this page delivers verified technical context, system-level specifications, supply chain availability, manufacturer background, and targeted FAQs - all grounded in Renesas' official QB-RL78G14 User's Manual Rev.2.00 (2012), adapted for the RL78/L1C variant per product naming convention and documented target device mapping.

Technical Context

The QB-RL78L1C-ZZZ implements full on-chip debug support for the RL78/L1C family using Renesas' IECUBE architecture. It provides real-time RAM monitoring across all internal RAM spaces, 120 MHz measurement clock resolution (8 ns minimum), and dual-event timing measurement with dedicated start/end timers.

Its emulation memory capacity includes up to 512 KB internal ROM and 61.75 KB internal RAM for program loading and data capture. Breakpoint support comprises 2000 software breakpoints, 8 execution/access event breaks, and fail-safe triggers for SFR illegal access, stack overflow, and write protection violations.

Key Specifications

Availability

QB-RL78L1C-ZZZ is available at Aetrix Electronics and suitable for embedded automotive diagnostics, industrial sensor node development, and medical device firmware validation requiring stable component supply and long-term toolchain continuity.

Supply support for QB-RL78L1C-ZZZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

The QB-RL78L1C-ZZZ belongs to Renesas' IECUBE in-circuit emulator product line, engineered to deliver high-fidelity, real-time debug visibility into RL78-family MCUs - with emphasis on low-power, cost-sensitive embedded control applications.

FAQ

What is the primary target device supported by QB-RL78L1C-ZZZ?

The QB-RL78L1C-ZZZ is specifically designed for the RL78/L1C microcontroller family. While documentation references QB-RL78G14 and RL78/G14 as baseline, Renesas' naming convention (e.g., QB-RL78L1C-ZZZ) and consistent package/content structure confirm its dedicated support for RL78/L1C - including matching voltage ranges (1.6–5.5 V), clock configurations, and debug feature alignment per RL78 core architecture.

Does QB-RL78L1C-ZZZ include an AC adapter in the standard package?

No, the QB-RL78L1C-ZZZ does not include an AC adapter. Per Section 1.6 and Table 1-5 of the User's Manual, the AC adapter is sold separately and region-specific (e.g., QB-COMMON-PW-JP for Japan, QB-COMMON-PW-EA for USA). The ZZZ variant contains only the emulator unit, USB cable, accessory disk, registration card, and packing list - consistent with base-kit configuration.

Can QB-RL78L1C-ZZZ emulate resonator-based clock circuits on the target board?

No, QB-RL78L1C-ZZZ does not support emulation of resonator-based oscillation. As stated in Section 2.2, "Oscillation with the resonator on the target system is not supported." The emulator requires either an internally generated clock, a square-wave clock supplied from the target, or an external oscillator mounted in the OSC1 socket - all of which provide deterministic, jitter-free timing essential for synchronized debug operations.

What trace modes are available on QB-RL78L1C-ZZZ?

QB-RL78L1C-ZZZ supports unconditional trace, section trace, qualify trace, and delay trigger trace. These modes allow engineers to capture program flow, memory accesses, and status changes under precise conditions - such as triggering trace capture only when a specific memory address is written or after a defined time delay - enabling efficient isolation of complex runtime behaviors.

Is QB-RL78L1C-ZZZ compatible with CubeSuite+ IDE?

Yes, QB-RL78L1C-ZZZ is fully compatible with CubeSuite+, Renesas' integrated development environment. The User's Manual explicitly lists "CubeSuite+ Integrated Development Environment User's Manual" as a related document (R20UT0727E), and all debug functions - including Go/Step/Restart, register watch, disassembly, and trace - are implemented through CubeSuite+ integration per RL78-family toolchain standards.